I want to create Sodium silicate solution (Na2O = 7.5–8.5 %, SiO2 = 25.5–28.5 %) by dissolving silica beads (SiO2) and sodium hydroxide (NaOH) in water. I am an environmental scientist and my chemistry is a bit weak! someone can help me figure out the concentrations and quantities that will be used?
Note: 80g NaOH, 60g SiO2 in 100ml water gives Na2SiO3 (1:1 for sodium and silicon)
i need 1:2 for sodium and silicon
Such a highly concentrated sodium silicate solution is not possible. You need a lot more water. Also, the idea to product of Na2SiO3 by the reaction between NaOH and SiO2 in a water solution is wrong. Sodium silicate is made by fusing together soda ash and silica sand. The resulting pieces of water glass are then processed by water vapor in to a water glass solution. Usual concentrations of the water glass are between 20 and 40%. You don't need to sintetize such a solution yourself, it can be bought very cheaply in any hardware store.
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